| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.89 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.89 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.6 | USD | 20250905 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.28 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.57 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.79 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.5 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.03 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 919.33 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.9 | USD | 20250828 |